Jerry Lewis as Morty S. Tashman

Brian Donlevy as Tom 'T.P.' Paramutual

Howard McNear as Dexter Sneak

Dick Wesson as The A.D.

Kathleen Freeman as Mrs. Helen Paramutual

Robert Ivers as Young NY Director Who Argues with T.P.

Pat Dahl as Miss Carson

Renée Taylor as Miss Giles

Rita Hayes as Singer Who Dubs Davitt

Stanley Adams as Grumpy

Isobel Elsom as Irma Paramutual

Sig Ruman as Baron Elston Carteblanche

Felicia Atkins as Serina

Doodles Weaver as Weaver

Fritz Feld as Busby - Roaring 20's Director

Kenneth MacDonald as Mr. Fumble

Joey Forman as Jedson

Iris Adrian as Anastasia Anastasia, Actress

Paul Ritts as Paul Ritts

Mary Ritts as Mary Ritts

David Landfield as Lance (as Dave Landfield)

Del Moore as M.C. at Premiere

Bellfontevro as Puppeteer

Richard Bakalyan as Jason, Anastasia's Director

Joe Besser as Man Watching Rushes

Theodora Davitt as Southern Belle in Film

Milton Frome as Mr. Greenback

Hank Ladd as Paramutual Family Member

Mary LeBow as Lover in Film

Mike Mahoney as Carl - Prop Man's Assistant

Mickey Manners as Larkin

Sally Mansfield as Miss Herok - Script Stenographer

Mike Mazurki as Blonde 'Movie Siren'

Richard Morrow as Minor Role

Bill Richmond as Bespectacled Man in Elevator

Caroline Richter as Bubblegum Blower in Elevator

Michael Ross as Big Man in Elevator (as Mike Ross)

Benny Rubin as Mr. Wabenlotnee

Regis Toomey as Studio Exec with the Baron

Mary Treen as Commissary Cashier

Herb Vigran as Cigar Smoker in Elevator

Jerry Wayne as Confederate Soldier in Movie

William Wellman Jr. as Actor / Lover in Film

Quinn O'Hara as Model (uncredited)